SU1292109A1 - Device for controlling electric power consumption of factory - Google Patents

Abstract

This invention relates to the field of electrical engineering. The purpose of the invention is to increase the efficiency of the device. The decisive unit 26, through a programmable interval timer 17, generates a series of pulses of different intensity that are transmitted through the transmitted communication channel 4 to the information transmission unit. 3.1-3.p where are selected, providing through counter 15 and decryption block 16 (L 1C: about 1 s

Description

Tors poll the status of sensors 1 power consumption and sensors 2 technological processes. The information about the status of sensors 1 and 2 goes through receiving communication channel 5 to decision block 26, where a control signal is generated, arriving at

one

The invention relates to electrical engineering, in particular, to power consumption monitoring and control devices.

The purpose of the invention is to increase the efficiency of the device.

Figure 1 shows a block diagram of a device for controlling enterprise energy consumption; FIG. 2 shows timing charts of control signals.

The device dp power management enterprise (Fig.1) contains sensors 1 power consumption, sensors 2 technological processes, nodes 3.1 - Z.p information transfer, transmitting 4 receiving 5 communication channels and node 6 of the collection and processing of information. The components 3.1 - Z.p information transfer input14t block 7 input registers, to the inputs of the parallel recording of which are connected, the outputs of the sensors 1 power consumption and sensors 2 technological processes. The information outputs of block 7 of the input registers are connected to the first p-input element OR 8, the output of which is connected to the first input of the .2И-НЕ 9 element, the output of which is connected to the first input of the 2I element 10, the output of which is connected through the second output amplifier 11 to the receiving link 5. The transmitting communication channel 4 is connected to the input of the second input driver 12 connected to the clock input of the input registers block 7, to the second input of the element 2И 10, to the inputs of the polling selector block 13 and the reset selector 14, the output of which is connected to the meter input 15, To the clock inputs of which the power consumers are connected via the drive control unit 31. Efficiency gains are achieved by reducing the number of communication lines from sensors to the data acquisition and processing unit. 2 Il.

the moves of the block 13 poll selectors connected to the reset selector 14. The outputs of the block 15 of the counters are connected to the inputs of the block 16 of the cascade decoders. The output of the second input driver 12 is connected via an inverter 17 to the clock input of the first trigger 18, the inverse output of which is connected to the installation input of the second trigger 19, the direct output of which is fed to the installation input of the first trigger 18 and to the first control one of the 1st input of the 7-input unit registers, to the other control inputs of which are connected the outputs of the block of 16 cascade decoders, also connected to the second p-input element OR 20, whose output

Q is connected to the clock input of the second trigger 19 and to the second input of the element 2I-NOT 9.

The composition of node 6 of the collection and processing of information includes the first output

5 an amplifier 21, the output of which is connected to the transmitting link 4, and the output of the first output amplifier 21 connected to the input of the programmable interval timer 22 connected to the control inputs of the receiving register 23, the output of the first input driver 24 is connected to the input of the sequential recording, the input of which is connected to the receiving communication channel 5. The outputs of the receiving register 23 are connected to the inputs of the information receiving unit 25, which is associated with the decision block 26, which is also associated with the programmable interval timer 22, the program block 27 and the matching unit 28, to which the control unit 29 is connected, the display unit 30 and alarms and drive control unit 31.

five

31

The device works as follows.

Each power consumption sensor 1 impulses a pulse corresponding to a certain amount of electricity. The energy weight of the pulse is determined by the current and voltage transformation ratio. Each process sensor 2 carries information about the state of the electrical consumer.

According to the commands of the decision block 26, the programmable interval timer 22 detects a predetermined sequence of pulses of different duration (see Fig. 2), which through the first output amplifier 21 enters communication channel 4 and further to the input of the second input generator 12.

Pulse 32 (figure 2) the selector 14 of the reset sets the block 15 of the counters to its original position. With the arrival of pulses 33 and 34 through the selector 13, the state of the counters of the block 15 counters changes (the number and sequence of pulses 33 and 34 are determined by the number of counters in block 15). A series of clock pulses 34 is designed to directly poll the state of the cells of the block 7 input registers.

With the arrival of a sequence of pulses 33 and 34 (Fig. 2), a code appears at the output of block 15 of counters, which is decrypted by block 16 of cascade decoders. As a result, one of the registers of block 7 is prepared for operation, and through the second p-input element OR 20, a permitting signal is sent to the second input of element 2I-HE 9 and the signal to the clock input of the second trigger 19, which changes its state and outputs a signal DP records the status of sensors 1 and 2 in the cells of the selected register of block 7 registers.

The first pulse from the series of output pulses 35 (Fig. 2) through the inverter 17 and the first trigger 18, the second trigger 19 is reset and a sequential interrogation of the state of the cells of the selected black register 7 begins. Signals from the serial output of the register 7 through the first input element OR 8, element 2И-NOT 9., element 2И 10 (synchronized by clock pulses - from the output of the second input driver 12) and through

094

the second output amplifier 11 enters the receiving channel of communication 5 and. next to the input of the first input driver 24. From the output of the first input driver 24 of the signal in the sequential code are recorded in the receiving register 23 clocked by signals from the output of the programmable interval timer 22.

After polling the last cell of the selected register of block 7, information from the outputs of the receiving register 23 in a parallel code is entered into block 25 of receiving information from which to the random access memory of the receiving block 26.

Next, the process of polling the state of sensors 1 and 2 is repeated in accordance with the timing diagram presented in FIG.

The algorithm for polling the state of the sensors recorded in the program block 27 of the device provides the ability to selectively poll the state of various sensors 1 and 2 connected to various geographically dispersed information transfer nodes 3.1 - ZP.

The RAM of the decision block 26 stores information about the status of each of the polled sensors. Since the input signals can be distorted by interference, information is stored in the RAM for several sensor polling cycles. It is considered that the electrical energy consumption sensor emits a pulse if the decision unit encounters some combination of input signals (for example, OOP or to increase the reliability of information reception a different combination may be given, for example, 00001111). Dp of monitoring the state of technological process sensors is set by other code combinations (e.g., 11.00 or 111,000, etc.).

At the end of each sensor polling cycle, information is shifted. In this case, the high-order information is erased, and the low-order cell is prepared to receive information about the state of the sensor in a new polling cycle.

According to the algorithm set by the program block 27, the decision block 26 maintains a program timer and a calendar with the generation of the labels End of Secide,

51

The end of the minute, The end of the half hour, The end of the hour, The end of the day, The end of the month.

According to the signals of the technological process sensors and according to the algorithm set by the program block, control signals are generated, providing off-peak consumer operation, as well as the forced inclusion of these consumers during periods of technological load drops (if the technological process of the enterprise allows). The signals developed in the soldering unit 26 through the matching unit 28 are transferred to the control unit 31 to the appropriate users of the automation scheme, controllers, switching devices.

The data received from the electrical energy consumption sensors 1 are multiplied by the coefficients stored in program block 27 and corresponding to a certain price of the input pulse (taking into account the transformation ratios of current transformers and voltage). The data obtained are summarized from previously accumulated information. The RAM memory cells store information on the consumption of electrical energy on each channel for specified periods of time. In addition, the input data is combined into groups according to the sign (consumed or released energy) according to the signs stored in the program block. Grouped information on races: the course of electricity is stored in RAM for a cycle of time specified by the input data processing algorithm.

During periods of maximum load on the power system, data are generated on the 30-minute consumption of electrical energy / P | ° / as well as a history of the consumption of electricity to provide a forecast of power consumption.

In decision block 26, the generated data is compared with the predetermined values of P and, in the case, the information through the matching block 28 is fed to the display and signaling block 30.

In addition, during the hours of maximum load of the power system, the predicted value is calculated by the specified algorithm: the power consumption at the end of the monitored interval (P) B

1096

to decisive block 26, the forecast result is compared with a predetermined value, and in the case of P -, the information is received through block 28

on the block 30 display and alarm. The decisive block 26, according to the algorithm specified in the program block 27, conducts a selection of consumers, due to which power consumption is reduced. The choice of consumers is carried out taking into account their state, information about which is received from sensors 2 of technological processes. The signals for switching off consumers go to drive control unit 31, which produces control actions on consumers.

The control panel 29 in the device is used to input the RAM of the decisive block 26 with a reference value, such as a predetermined power RE, start and end time1 of the maximum periods of the power system, as well as to call

 to display information about the power consumption of the enterprise.

Cost efficiency is achieved by significantly reducing the number of communication lines from the sensors to the data acquisition and processing unit. Moreover, an increase in the number of sensors does not lead to an increase in the number of communication lines.

35

Claims (1)

Invention Formula A device for controlling the power consumption of an enterprise, comprising electrical energy consumption sensors, technological process sensors, a first input driver, a first output amplifier, an information receiving unit connected to a decision block, which is associated with a programmable interval timer, a software block and a matching unit, outputs which are connected to the inputs of the drive control unit, characterized in that, in order to increase the efficiency of the device, the receiving register, receiving and transmitting communication channel and kr; 1 least one information transfer node containing a block of input registers, first and second p-input elements OR, element 2I-NOT, element 2I, first and second triggers, inverter, second input driver, second output usi0 five a switch, a reset selector, a polling selector unit, a counter unit and a cascade decoder unit, with the outputs of the electrical and electrical process flow sensors connected to the parallel inputs of the input register block whose information outputs are connected to the first p-input element OR whose output is connected to the first input of element 2I-NOT, the output of which is connected to the first input of the element 2I connected via the second output amplifier to the receiving communication channel connected via Rvs input shaper to the input of the sequential recording of the receiving register, whose information outputs are connected to the inputs of the information receiving unit, to the control inputs of the receiving register connected to the outputs of the programmable - interval timer, connected through the first output amplifier, to the transmitting communication channel, connected to the input of the second 32 55 Editor N. Margolin Compiled by K.Fotina Tehred L. Serdyukon Order 280/54 Draw 619 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 five 0 five input shaper, the output of which is connected respectively to the input of the reset selector, polling selector unit, the second input of element 2I, to the clock input of the input registers block and through the inverter to the clock input of the first trigger, the inverse output of which is connected to the setup input of the second trigger, whose direct output is connected to the setup input of the first trigger and to the first control input to the input block of the input registers, to the other control inputs of which are connected the outputs of the cascade decryption unit connected also to the second p-input element OR, the output of which is connected to the clock input of the second trigger and to the second input of the element 2I-NOT, to the inputs of the cascade decoder unit the outputs of the counter unit are connected, to the installation input of which the output of the reset selector to which the output is connected block poll selectors connected to the clock inputs of the block counters. five 55 pppp Fie.2 Proofreader V. But ha